BreastPregnancyBreast NeoplasmsPregnancy OutcomePregnancy ComplicationsCarcinoma, Ductal, BreastReceptors, EstrogenPregnancy, AnimalCell Line, TumorBreast DiseasesReceptor, erbB-2TamoxifenReceptors, ProgesteronePregnancy, EctopicMammographyGene Expression Regulation, NeoplasticNeoplasm MetastasisPrognosisNeoplasm InvasivenessRisk FactorsTumor Markers, BiologicalPregnancy Trimester, FirstBreast Neoplasms, MaleAntineoplastic Agents, HormonalNeoplasm StagingPregnancy RatePregnancy Trimester, ThirdEarly Detection of CancerMastectomyPregnancy Complications, NeoplasticAntineoplastic AgentsGenes, BRCA1Neoplasm ProteinsPostmenopauseChemotherapy, AdjuvantBreast FeedingCase-Control StudiesCarcinoma, LobularPregnancy Complications, CardiovascularPregnancy TrimestersProspective StudiesPregnancy TestsEstrogensCarcinoma, Intraductal, NoninfiltratingMCF-7 CellsGenetic Predisposition to DiseaseRiskMice, NudePregnancy, MultipleEstrogen Receptor alphaPremenopauseRetrospective StudiesFollow-Up StudiesSurvival AnalysisAntineoplastic Combined Chemotherapy ProtocolsTumor Cells, CulturedImmunohistochemistryDrug Resistance, NeoplasmCarcinomaMammary Neoplasms, ExperimentalGene Expression ProfilingPregnancy in DiabeticsBreast Self-ExaminationNeoplasms, Hormone-DependentDisease-Free SurvivalPregnancy, TubalPregnancy Trimester, SecondOvarian NeoplasmsCell ProliferationRNA, MessengerRisk AssessmentLymphatic MetastasisMenopauseReverse Transcriptase Polymerase Chain ReactionOdds RatioCohort StudiesNeoplasm Recurrence, LocalAge FactorsBRCA2 ProteinSurvival RateParityIncidenceGenes, BRCA2BRCA1 ProteinEstradiolTime FactorsTreatment OutcomeAromatase InhibitorsFibrocystic Breast DiseaseEstrogen AntagonistsPregnancy in AdolescenceSurvivorsLung NeoplasmsPregnancy Complications, InfectiousDisease ProgressionMastectomy, SegmentalAxillaGenes, erbB-2NeoplasmsAbortion, Spontaneous